* {
    margin: 0;
    padding: 0;
}

.web {
    .drawBox {
        position: absolute;
        top: 50%;
        left: 50%;
        width: 640px;
        height: 640px;
        margin-left: -320px;
        margin-top: -320px;
        border: 2px solid red;
        box-sizing: border-box;
        div {
            position: absolute;
            width: 200px;
            height: 200px;
            font-size: 28px;
            text-align: center;
            background-color: #ff0;
            color: #000;
            line-height: 200px;
            border: 2px solid skyblue;
            user-select: none;
            &:nth-child(1) {
                top: 0px;
                left: 0px;
            }
            &:nth-child(3) {
                top: 0px;
                right: 0px;
            }
            &:nth-child(2) {
                top: 0px;
                left: 220px;
            }
            &:nth-child(4) {
                top: 220px;
                right: 0px;
            }
            &:nth-child(5) {
                bottom: 0px;
                right: 0px;
            }
            &:nth-child(6) {
                bottom: 0px;
                left: 220px;
                ;
            }
            &:nth-child(7) {
                bottom: 0px;
                left: 0px;
            }
            &:nth-child(8) {
                top: 220px;
                left: 0;
            }
            &:nth-child(9) {
                top: 220px;
                left: 220px;
            }
            &.active {
                color: #ff0;
                background-color: #f00;
                transform: scale(.95);
                border-radius: 25%;
            }
            &.startBtn {
                background-color: #c1c1c1;
                color: #fff;
                border-radius: 50%;
                cursor: pointer;
            }
            // &:nth-child(1){}
            // &:nth-child(2){}
            // &:nth-child(3){}
            // &:nth-child(4){}
            // &:nth-child(5){}
            // &:nth-child(6){}
            // &:nth-child(7){}
            // &:nth-child(8){}
            // &:nth-child(9){}
        }
    }
}